Out-of-bounds read in Linux kernel - CVE-2022-49395

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Main Vulnerability Database Vulnerabilities #VU104504

Out-of-bounds read in Linux kernel - CVE-2022-49395

Published: February 26, 2025 / Updated: May 11, 2025


Vulnerability identifier: #VU104504
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-49395
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to an out-of-bounds read error within the write_ldt_entry() function in arch/x86/um/ldt.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Anolis OS
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
SUSE Linux Enterprise Live Patching
openEuler
Juniper Secure Analytics (JSA)
IBM Qradar SIEM
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
kgraft-patch-4_12_14-122_255-default
dlm-kmp-default
ocfs2-kmp-default-debuginfo
kernel-default-base
gfs2-kmp-default
kernel-syms
dlm-kmp-default-debuginfo
kernel-default-devel-debuginfo
cluster-md-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
ocfs2-kmp-default
kernel-default-devel
cluster-md-kmp-default
kernel-default-debuginfo
kernel-default-debugsource
kernel-default
kernel-source
kernel-devel
kernel-default-base-debuginfo
kernel-macros
kernel-default-kgraft-devel
kernel-default-kgraft
kernel-default-man
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-debug-devel
kernel-debug-core
kernel-debug
kernel-tools-libs
kernel-cross-headers
kernel-debug-modules
kernel-debug-modules-extra
kernel-headers
kernel-modules
kernel-modules-extra
kernel-tools
kernel-core
kernel
bpftool
kernel-tools-libs-devel
perf
python3-perf
kernel-abi-stablelists
kernel-doc
kernel-tools-devel
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-tools-debuginfo
perf-debuginfo
python2-perf
python2-perf-debuginfo
python3-perf-debuginfo
Red Hat OpenShift Container Platform

How to mitigate CVE-2022-49395

Install update from vendor's website.

Linux kernel - update to 4.14.283
Juniper Secure Analytics (JSA) - update to 7.5.0 UP12 IF03
IBM Qradar SIEM - update to 7.5.0 Update Pack 12 IF03
kgraft-patch-4_12_14-122_255-default - update to 1-8.5.1
dlm-kmp-default - update to 4.12.14-122.255.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.255.1
kernel-default-base - update to 4.12.14-122.255.1
gfs2-kmp-default - update to 4.12.14-122.255.1
kernel-syms - update to 4.12.14-122.255.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.255.1
kernel-default-devel-debuginfo - update to 4.12.14-122.255.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.255.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.255.1
ocfs2-kmp-default - update to 4.12.14-122.255.1
kernel-default-devel - update to 4.12.14-122.255.1
cluster-md-kmp-default - update to 4.12.14-122.255.1
kernel-default-debuginfo - update to 4.12.14-122.255.1
kernel-default-debugsource - update to 4.12.14-122.255.1
kernel-default - update to 4.12.14-122.255.1
kernel-source - update to 4.12.14-122.255.1
kernel-devel - update to 4.12.14-122.255.1
kernel-default-base-debuginfo - update to 4.12.14-122.255.1
kernel-macros - update to 4.12.14-122.255.1
kernel-default-kgraft-devel - update to 4.12.14-122.255.1
kernel-default-kgraft - update to 4.12.14-122.255.1
kernel-default-man - update to 4.12.14-122.255.1
Red Hat OpenShift Container Platform - addressed in versions 4.12.79, 4.15.53, 4.16.46, 4.18.22
kernel (Red Hat package) - addressed in versions 4.18.0-193.156.1.el8_2, 4.18.0-305.162.1.el8_4, 4.18.0-372.153.1.el8_6, 4.18.0-553.56.1.el8_10, 5.14.0-70.138.1.el9_0, 5.14.0-427.81.1.el9_4
kernel-rt (Red Hat package) - addressed in versions 4.18.0-553.56.1.rt7.397.el8_10, 5.14.0-70.138.1.rt21.210.el9_0, 5.14.0-284.125.1.rt14.410.el9_2
kernel-debug-devel - update to 4.18.0-553.58.1.0.1
kernel-debug-core - update to 4.18.0-553.58.1.0.1
kernel-debug - update to 4.18.0-553.58.1.0.1
kernel-tools-libs - update to 4.18.0-553.58.1.0.1
kernel-cross-headers - update to 4.18.0-553.58.1.0.1
kernel-debug-modules - update to 4.18.0-553.58.1.0.1
kernel-debug-modules-extra - update to 4.18.0-553.58.1.0.1
kernel-devel - update to 4.18.0-553.58.1.0.1
kernel-headers - update to 4.18.0-553.58.1.0.1
kernel-modules - update to 4.18.0-553.58.1.0.1
kernel-modules-extra - update to 4.18.0-553.58.1.0.1
kernel-tools - update to 4.18.0-553.58.1.0.1
kernel-core - update to 4.18.0-553.58.1.0.1
kernel - update to 4.18.0-553.58.1.0.1
bpftool - update to 4.18.0-553.58.1.0.1
kernel-tools-libs-devel - update to 4.18.0-553.58.1.0.1
perf - update to 4.18.0-553.58.1.0.1
python3-perf - update to 4.18.0-553.58.1.0.1
kernel-abi-stablelists - update to 4.18.0-553.58.1.0.1
kernel-doc - update to 4.18.0-553.58.1.0.1
kernel-tools-devel - update to 4.19.90-2504.1.0.0322
kernel - update to 4.19.90-2504.1.0.0322
bpftool - update to 4.19.90-2504.1.0.0322
bpftool-debuginfo - update to 4.19.90-2504.1.0.0322
kernel-debuginfo - update to 4.19.90-2504.1.0.0322
kernel-debugsource - update to 4.19.90-2504.1.0.0322
kernel-devel - update to 4.19.90-2504.1.0.0322
kernel-source - update to 4.19.90-2504.1.0.0322
kernel-tools - update to 4.19.90-2504.1.0.0322
kernel-tools-debuginfo - update to 4.19.90-2504.1.0.0322
perf - update to 4.19.90-2504.1.0.0322
perf-debuginfo - update to 4.19.90-2504.1.0.0322
python2-perf - update to 4.19.90-2504.1.0.0322
python2-perf-debuginfo - update to 4.19.90-2504.1.0.0322
python3-perf - update to 4.19.90-2504.1.0.0322
python3-perf-debuginfo - update to 4.19.90-2504.1.0.0322

External References

Related Security Bulletins